Posted 18 July 2012 - 12:19 PM

Having the following issue on ML, using an (Asus) NVIDIA GTS 450 (1GB), GraphicsEnabler=Yes

-> when I change the resolution the screen turns blue, everything else disappears!
(somehow this looks like a very familiar problem ;-)

By default it's on "best for display", and then everything (resolution/refresh rate/QE) works fine.

When I select "scaled" all the possible resolutions are normally there, but when selecting another (usable) resolution, everything disappears and I get stuck at a blue screen. So why change? well it also happens when I connect a 2nd monitor, but that one does not automatically goes into the best resolution. And...

A similar problem happens when coming out of a 3D game (having no problems in the game) , I get a distorted image, LM graphics seems to have crashed then, but system has not totally crashed.

None of these problems in Lion, and in Lion changing resolutions on dual monitor also works fine.

Posted 25 July 2012 - 03:57 PM

Posted 25 July 2012 - 04:19 PM

slayer2333

InsanelyMac Sage

Members

299 posts

Gender:Male

Same thing, didn't try to change resolution as i like it as is, but when plugging an external display AND going on mirroring = stuck at blue screen. Strange that it works when using extended desktop.
Nvidia 460m GTX.

Posted 25 July 2012 - 08:42 PM

kyleg40

InsanelyMac Protégé

Members

90 posts

I posted this issue last week and no response..I have had the same issue with 430GT, one guy who wrote the hdmi sound out kext for the 430 said it was an apple engineer issue..A problem they have to fix

Posted 26 July 2012 - 02:59 AM

-> when I change the resolution the screen turns blue, everything else disappears!(somehow this looks like a very familiar problem ;-)

It is. If you use the forum search you can find posts about this issue and the same answer that I'm going to post here, from all the way back to 2006.

Blue screen on resolution change usually means that you're not using the primary display output on your video card. Try using another output.On Nvidia cards, traditionally OS X prefers the primary display to be connected to the output that's closest to the motherboard, when looking directly at the back of your PC. You must reboot after switching outputs.

i have cuda installed

Not related. The CUDA driver does nothing besides enabling CUDA. Installing it can not possibly fix display issues.

This is in the top myths perpetrated here:

1. Extract your DSDT and place it in /Extra (this does nothing, overriding your DSDT with an unpatched DSDT is pointless)2. OS X requires AHCI mode (this is not true, just use the right driver for your SATA controller)3. Installing CUDA can fix video issues (no way)

Posted 27 July 2012 - 08:15 AM

kyleg40

InsanelyMac Protégé

Members

90 posts

I tried em all on the GT 430 and still getting the blue screens on that system..I have a GT 240 in another system and boom it all works..I didn't get the hdmi sound working, but haven't tried since the spdif works..So I have no clue what it is..The 240 almost exact stats on cinebench as 430..

Posted 27 July 2012 - 04:23 PM

It is. If you use the forum search you can find posts about this issue and the same answer that I'm going to post here, from all the way back to 2006.

Blue screen on resolution change usually means that you're not using the primary display output on your video card. Try using another output.On Nvidia cards, traditionally OS X prefers the primary display to be connected to the output that's closest to the motherboard, when looking directly at the back of your PC. You must reboot after switching outputs.

Not related. The CUDA driver does nothing besides enabling CUDA. Installing it can not possibly fix display issues.

This is in the top myths perpetrated here:

1. Extract your DSDT and place it in /Extra (this does nothing, overriding your DSDT with an unpatched DSDT is pointless)2. OS X requires AHCI mode (this is not true, just use the right driver for your SATA controller)3. Installing CUDA can fix video issues (no way)

changing the output ports like you said didn't help.

btw,

what DOES cuda do then?

and what about DSDT, is it good to extract my DSDT to /extra AND patching it?

Posted 27 July 2012 - 08:23 PM

It's weird that changing outputs doesn't fix it. Must be something new that I am too old to know about.

what DOES cuda do then?

Exactly what I said, The CUDA driver enables CUDA to work. Put simply CUDA allows your GPU to be used as an additional CPU, but it only works with software that was explicitly programmed to use it. It's used mainly by professional software like some Photoshop plugins (but not Photoshop itself). There is no reason to install CUDA if you're not running any apps that make use of it - just like there's no reason to install PhysX on Windows if you don't use your PC to play games.For more information, read the wikipedia article about CUDA.

and what about DSDT, is it good to extract my DSDT to /extra AND patching it?

I can't tell you if it's "good". You patch your DSDT in order to fix a specific problem that you're having.